>6dn4A (A:) observed residues (from ATOM records)
aaldpaqplaeappyslfeawakpvqpfaiwpgvwyvgtenlssvllttpqghilidagl
dasapqirrniealgfrmadiryiansharldqaggiarlkawsgarviashanaeqmar
ggkedfalgdalpfppvtvdmeaqdgqqwhlggvtlaaiftpghlpgatswkvtladgkt
liyadslatpgyplinnrnyptlvedirrsfarleaqqvdiflankgerfglmdkmarka
rgennafidkaglaryvaqsraafekqlaaqraqp